> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Chainstack updates: April 12, 2023

> Chainstack Subgraphs leaves closed beta and opens to all users, with new tutorials published; Ethereum MEV API deprecated after the Merge.

* **Services**. [Chainstack Subgraphs](/docs/subgraphs-introduction) has finished the closed beta and is now open to all our customers.
* **Documentation**. We added a [series of developer tutorials](/docs/chainstack-subgraphs-tutorials) for Chainstack Subraphs users: from a newbie to an expert. Try them out and let us know what you think.
* **Protocols**. Ethereum MEV API is now deprecated since it hasn't been functional since the Merge.